An In-Network Caching Strategy for Reducing Playback Interruption Time of On-Demand Streaming over CCN
An In-Network Caching Strategy for Reducing Playback Interruption Time of On-Demand Streaming over CCN
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DOI：
10.2299/jsp.21.141
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发表时间：
2017-07
期刊：
影响因子：
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通讯作者：
Takeshi Misu;M. Hanada;H. Kanemitsu;M. Kim
中科院分区：
文献类型：
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作者：
Takeshi Misu;M. Hanada;H. Kanemitsu;M. Kim
最近，以内容为中心的网络（Content-Centric Networking， CCN）作为一种新的网络模式出现了。CCN架构的主要特点是网络内缓存和基于内容的路由。在过去的文献中，缓存替换和决策策略作为网络内缓存的重要机制进行了讨论。但是，这些策略不能有效地支持流。在本文中，我们提出了一种网络内缓存方法，通过有效利用网络资源来减少CCN上点播流的播放中断时间。该方法将流媒体内容数据分割成固定大小的块，并将这些块存储在每个CCN路由器的缓存存储器中，以减少流媒体播放中断时间。实验结果表明，本文提出的网络内缓存方法在播放中断时间方面优于原始CCN架构的网络内缓存方法。
Recently, Content-Centric Networking (CCN) has emerged as a new networking paradigm. The main features of CCN architecture are in-network caching and content-based routing. Cache replacement and decision policies have been discussed as important mechanisms of in-network caching in past literature. However, these policies cannot efficiently support streaming. In this paper, we propose an in-network caching method for reducing playback interruption time of on-demand streaming over CCN through efficient use of network resources. The proposed method splits streaming content data into chunks with fixed size and stores these chunks into the cache storage of each CCN router in order to reduce playback interruption time for streaming. Experimental evaluations show that the proposed in-network caching method outperforms in-network caching methods of the original CCN architecture in terms of playback interruption time.